This dataset is part of a laboratory experiment, which evaluated how varying prey densities (year-0 blue king crabs) and habitat type (shell and sand) affect the functional response of year-1 blue king crabs, crypsis of prey crabs, and foraging behavior of predator crabs. The data includes date, experimental duration, tank number, predator species, prey species, predator size, substrate type, initial and final prey densities, number of prey eaten, crypsis indices, survival, and time spent foraging.

This is data from a long-term monitoring project which utilized sonic tags to follow aggregations of red king crab in Womens Bay near Kodiak Alaska. The database consists of four major tables: Sonic tags: An inventory of all tags used recording crab size and sex dates of tag release and recovery, and if possible the reason for tag loss. Locations: Field locations in latitude, longitude, and depth for sonic tags, generally acquired on a weekly basis. Dive summary:A summary of dive observations on sonic tagged crab aggregations to document crab behavior and habitat use. Crab measurements:Measurements of crab carapace lengths, sex, and shell conditions of diver-collected crab from crab aggregations associated with tagged crab.

This dataset is part of a laboratory experiment, which evaluated how varying ratios of prey species (year-0 blue and red king crabs) and habitat type (shell and cobble) affect prey preference of year-1 red king crabs. The data includes experimental duration, tank number, predator species, prey species, substrate type, initial and final prey densities, number of prey eaten, crypsis indices, and survival.